Electrical cut-out



UITD STAS r s r EDWARD W. MOON, OF YOUNGSTOWN, NEW YORK, ASSIGNOR, BYDIRECT AND MESNE ASSIGNMENTS, OF TWENTY PER CENT TO CHARLES RAY KASKELLAND TWENTY PER CENT TO LE GRAND F. KIRK, BOTH OF YOUNGSTOWN, NEW YORK.

` ELECTRICAL CUT-OUT.

Application lcd April 16, 1926. Serial No. 102,484.

The invention has relation to fuse sockets, having tor an object toprovide an improved fuse socket wherein a coin or other round disk isnot admissible for the purposeot taking the place of a fuse plug inmaking the electrical connection.

The invention consists in the novel construction and combinations ofparts, as set forth in the appended claims.

In the accompanying drawings illustrating the invention, Figure l is acentral longitudinal section of the invention; Figure 2 is a similarview of the ordinary fuse socket with the plug removed and a c olninserted in place thereof, ,and Figure 3 is a plan view of a doublesocket constructed in accord with the invention and'having the fuseplugs removed.

In these drawings the numeral 1 designates the porcelain fuse blockhaving the socket 2, and provided at the inner end of said socket with acontracted recess 3 wherein is located an insulation washer or lining 3also recessed or of cupped form neatly litting said block recess andprovided with an outer liange at right angles thereto.l Located in thebottom of said recess of and upon said insulation lining is anelectrical Contact or copper terminal 4 with which the fuse plug isadapted at its inner end to contact, the depth and diameter of therecess of said washer being such that in case a coin or washer or otherround disk is inserted within the socket to take the place of a 'fuseplug which has blown (see Figure 2 of the drawing) the arcuate portionof said coin admissible within said recess will be upheld by themarginal portion of the recess of the insulation washer out of Contactwith said terminal.

It is a common practice to insert coins or washers to take the place ofthe fuse plugs the fuses of -wliichrhave blown, as shown in Figure 2 ofthe drawings, and in the event of a short circuit or other defectivewiring, in which case it is necessary for the fuse to blow and preventfurther damage, the coin would not function as a use, and damage such asires, etc., would result as a .consequence.

The porcelain body of the fuse plug in order to cooperate with the fusesocket stated` is provided with a contracted inner extension or pin 5,adapted to enter the recess of the insulation Washer freely and withoutcontacting with the side walls thereof, said pin being of adiaineterconsiderably less than the diameter of said socket and having a contactdevice or copper terminal 6 at its inner end for making the electricalconnection with the terminal a, said fuse plug being otherwiseconstructed as usual and having the external thread 7 of rolled sheetbrass, adapted to engage the internal thread 8 of lthe fuse socket, alsoof rolled sheet brass. The copper terminal 6 of the fuse plug will beheld thereby in contact with the copper terminal 4 of the'- socket.

I claim 1. A fuse block having a socket provided with a contractedrecess in the inner end wall thereof and a. cupped insulation liningneatly fitting the recess ot said block and having an-outer flange atright angles thereto, and an electrical terminallocated upon saidinsulation lining at the inner end ot said recess, the depth anddiameter of the recess of said insulation lining being suthcient touphold the arcuate portion of a disk admissible within said recess outof contact with said electrical terminal,

2. The combination with a base of dielectric material, of a fuse plugsocket having an end wall provided with a. central opening therethrough,an insulating washer overlying said end wall of said socket and having acentral cup shaped portion registering with said central opening, acontact nieniber within said cup shaped portion, securing saidinsulating washer and thereby securing said socket to said base, saidcontact member having no portion thereof eX- Jtending beyond said cupshaped portion, and a fuse plug having a projecting` contact adapted toengage said socket contact en-'v' tirely within said cup shaped portion.

In testimony whereof I a'HiX my signature.

E. W. MOON.

